Trains are the primary mode of passenger transportation in Japan. The efficiency, speed, and accessibility of these trains allows these trains to "use 88% less energy and produce(s) 92% less carbon emissions per seat,". Thus, they serve as a model of efficiency and sustainability that other countries should attempt to learn from and adapt to.
I look forward to my train journey in Japan, and I will continue to learn more about the system and its implementation in other areas of the world.
https://wanderwisdom.com/travel-destinations/Getting-Around-Japan-Planes-vs-Bullet-Trains
https://www.triodos-im.com/articles/2019/case-study-central-japan-railway
https://www.jrailpass.com/blog/japanese-trains